1. I wanna use JoomCredits with JMS. So I wanna know if a user who still has credits in his account can be transfered between slave sites?

2. I wanna a form or something to allow users to create their slave site (call it a blogging site). Can JMS allow users to create a slave site? E.g. User signs up and logs in. Wishes to create their own blogging site, fills up the JMS form (if any) and then the user has his/her site as a slave site automatically. Can this be done?

3. Is this compatible with JoomDonation to allow users to create their donation page? Similar idea as #2.

I appreciate any honest answers to my questions to allow me to further develop my site.

1) We never reviewed the JoomCredits extension.
Please send us this extension in the attachement of an email.
We will have a look if it can be defined and perhaps if it can be shared between website to allow sharing the credits between websites.

2) Yes, Jms Multisites contain a functionality that allow creating website from the front-end. You can propose a free or billable website creation from the front-end.
See the tutorial video 13 that show how to create a free website from the front-end.
www.jms2win.com/en/tutorial#jms12x-13

3) We never reviewed the JoomDonation extension.
So please send us this extension in the attachement of an email for review.

Our email is present in the "contact us".
www.jms2win.com/en/contact